Introduction: Pregnancy induced aplastic anemia is a rare entity and the association is not well explained. There are approximately 80 cases in the literature and we are presenting the largest series, so far, of 10 cases.
Results: Total of 10 cases had 11 pregnancies. Mean age at presentation was 25.45 years and mean gestation when symptoms first developed was 17.09 weeks. Pallor and bleeding manifestations were the most common presenting complaints. Mean Hb, TLC, ANC and platelets were 4.97 g/dl, 2.74 x 10(9)/l, 1.11 x 10(9)/l and 41 x 10(9)/l, respectively. Bone biopsy cellularity ranged from <5 to 25%. Nine out of 11 (81%) pregnancies were successful of which 7 was full term and 2 were premature. Two babies were small for dates. One spontaneous abortion and one intra uterine death (IUD) were observed. Two out of 11 mothers died due to disease after delivery. Two of the 8 surviving mothers, had spontaneous partial response (22%); 4 mothers were asymptomatic after therapy with immunosuppressives given for 6 months and 3 were lost to follow up without response. Specific therapy (cyclosporin) was tried in two mothers antenatally with partial response in one. One child whose mother was given cyclosporin antenatally had jejunal atresia at birth.
Conclusion: Pregnancy associated aplastic anemia is a rare association. Spontaneous remission can occur in 25-30% of patients. In the first trimester patients, pregnancy can be terminated while in advanced pregnancy patients can be followed up with stringent supportive care. Cyclosporin may be a safe drug antenatally in such patients. Patients with established aplastic anemia should avoid pregnancy.